Update travis to test against django-1.10. (#310)
Update travis to test against django-1.10. (#310)

See discussion at https://github.com/stephenmcd/cartridge/pull/306
traxxas/cartridge,ryneeverett/cartridge,ryneeverett/cartridge,stephenmcd/cartridge,traxxas/cartridge,stephenmcd/cartridge,wbtuomela/cartridge,wbtuomela/cartridge,dsanders11/cartridge,dsanders11/cartridge,traxxas/cartridge,wbtuomela/cartridge,dsanders11/cartridge,ryneeverett/cartridge,stephenmcd/cartridge